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April 28,1970 AN WANG ETAL 3,509,329

' CALCULATOR Filed Oct. 24, 1966 I Y 4? Sheets-Sheet 1 AN WANG ET April 28, 1-910 CALCULATOR 4'7 Sheets-Sheet 7 Filed Oct. 24.- 1 966 April 23, 1970 N 'w g ETAL 3,509,329

CALCULATOR Filed Oct. 24, 1966 I 47 Sheets-Sheet 9 l6 T E T 4 T 2 T T T us 323 1 8 I 14 I *2 I 11 322 o 1 o 1 lo 1 lo 1 o 1 ue a 1 4 1 2 1 G [I264 G G ls TIQST" I256 I262 I234 I244 I242 I232 T RESET FIG l2 April 28, 1-979 AN W NG ETAL cgaLcuLATo 47 Sheets-Sheet 10 Filed Oct. 24. 1966 T RESET s RESET 1 G 4 B O Ill 0 1. r B B 4 B 4 B W A o FIG I?) April 28, 1-970 AN WANG ETAL CALCULATOR 47 Sheets-Sheet 14 Filed Oct. 24. 1966 b Emma Gm i 3 moz Em V. Emma D Em Q! um y. .68: m 58m 6 o I Ewmm 5 58m 6 102 58E 3 Em -m n l Em 6 58m m O1 063 m2 Qz 8m 5m 3 0 waodii 6528 2o 0 to 0 to 20 20 to A moz P e 6 I I f f 0 5 na Q Wm o Al moz 2 o o F o o F o o o F 0 E02 l 2h; 2E NIL OIL mm: *0OM fi Q00; *moh; I I 5 L B 3 In to .l r P f 5 0 m 1Q Mb w 8: wa 069 508% 5538 m woww lm NP: 1 1| I ll 4 I |i I ll 4 BE as? mm: 25 908 6528 I0 M32 M330. 5238 m u E W SE on: 2 3E 9 $2 AT F]. ll mobmzww V630 wmt M ovt I0 T 92 ,l mu: Q "=5 as? n=2 2 as? m m XE NNt/ n 67 M28 M22 U22 U93 51 0252532 0 ll mwt Q J n. 5 Qt n o n 6528 025i April 28, 1970 Filed Oct. 24. 1966 AN WANG ET A CALCULATOR,

4? Sheets-Sheet 15 I822 I842 b SDO DEIS AND ,$D1 oIb cP Q I844 F5 I824 bw AND SD I864 H I oIb- 0 AND 30 I846 6 I826 bw H ON bo b SD| 0E1, 6

I848 555 I828 m-- DP AND 0 -----as H FIG I8 AND April 28, 1-970 AN WANG ET AL 3,509,329

CALCULATOR Filed Oct. 24, 1966 47 Sheets-Sheet 2O DISPLAY MODE START KE RST so s0 (l) QH P2 ARW READ DlGlT ADDRESSED (6) BY T INTO E AND DISPLAY IN POSITION T P ARW (7) START DIGIT -INH|B|T SIGNALS P4ARW REWRITE CONTENTS OF E 

